A failed removal should leave the affected item unchanged. Determine why it failed before trying broader authorization or another deletion method.
Close the owning application
Quit the application that created or uses the file. Also check menu-bar helpers, background services, installers, sync tools, and document windows.
Save work before force-quitting anything.
Refresh stale results
Another process may have moved or deleted the item after the scan. Run a new scan and act on the current result rather than repeatedly confirming the old entry.
Check access
Grant the selected folder and, when protected containers or system Trash are involved, review Full Disk Access. A specific protected action may separately require Touch ID or an administrator password.
Approve authorization only when it matches the item and operation you selected.
Check the disk
Removal can fail when a volume is:
- Read-only.
- Disconnected.
- Locked or encrypted but not unlocked.
- Owned by another user.
- Experiencing file-system errors.
Use Finder or Disk Utility to confirm the volume state. Back up important data before repairing a disk.
Locked and protected items
Inspect the item in Finder. Do not change ownership, permissions, or system-protection settings merely to remove a file you do not recognize.
For an app with its own uninstaller, use the developer’s removal tool when it manages drivers, privileged helpers, licensing, or shared components.
Partial uninstall
If the app bundle was removed but related files remain, restart the Mac, run Leftovers, and review each candidate. Preserve shared data and user documents.
Report a reproducible failure
Include the tool, exact error text, item path, disk type, macOS version, diCleaner version, and whether the item is in use. Avoid sending the file itself unless support explicitly needs it and you understand its contents.